./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
./a.out < wait5.txt &
